#include <iostream>
#include <fstream>
#include <string>
#include <math.h>
#include <time.h>
using namespace std;
const int PWDLENGTH = 10; //定义密码长度
int main() {
ofstream codefile ("codefile.txt", ios_base::app);
string password(PWDLENGTH,'0');
srand((unsigned)time(NULL));
for (int i = 0; i<9; i++)
{
// a 是 0-61 之间的随机数
int a = rand()%62;
if (a>=10 && a<=35) // A-Z
{
char c = a -10 +'A';
password[i] = c;
}
else if ( a>=36 && a<=61) // a-z
{
char c = a - 36 + 'a';
password[i] = c;
}
else
password[i]= a + '0';
}
codefile << password << endl;
return 0;
}